Meanwhile, here is what you can see on some other block explorers and monitors:
https://www.blocktrail.com/BTC/: 65k unconfirmed transactions, 112 MB mempool
https://tradeblock.com/bitcoin/:  89k unconfirmed transactions, 104 MB mempool
https://bitcoinfees.github.io/: 124 MB mempool size
http://statoshi.info/dashboard/db/transactions/: 137k unconfirmed transactions
http://munin.bitcoin-fr.io/bitcoin-fr.io/n.bitcoin-fr.io/index.html: 134k unconfirmed transactions, 116 MB mempool